Where can I find AQI information?

Government sources

This link describes how the NAQI values are calculated in India. The index value is based on eight pollutants (PM10, PM2.5, NO2 , SO2 , carbon monoxide (CO), ozone (O3) , ammonia (NH3) , and lead [Pb]), but in cases where not all the pollutants are monitored, data must be available for at least three pollutants for the NAQI to be calculated.

Other

How does India’s AQI compare with others?

What else do I need to know?

The AQI values are not actual pollutant concentrations, and as illustrated in the graphic above, countries use their own calculations for AQI. For example, concentrations that are labelled as ‘very high’ in UK are only ‘moderate’ or ‘poor’ in China and India respectively.